This allows to start run.py with --move_tests parameter to place tests

to another location and keep them runnable from there

--help message and starting run.py w/o parameters generate different messages

E. g. w/ and w/o build_path in the end

build_path is required, removing square brackets

    * correct the part about fixed aspect
    * improve formatting
    * add snippet markers to source
    * replace inline code by @snippet
  - do not run calibration twice when using a imageList
  - make output consistent in itself (CamelCase vs no_camel_case) as well as with old camera calibrate sample
  - respect write extrinsic/ points flags
  - set the aspectRatio value when specified
  - fix writing of calibration settings. also update grammar.
  - fix intendation and remove some size_t -> int casts by using size_t

How this worked before, I do not know.

added video writer quality, which user may change dynamically in the case of motion jpeg; enabled NEON intrinsics in the encoder

disable cuda::FastOpticalFlowBM if configured without cudaarithm

Fix a typo in first equation under method=CV_TM_CCOEFF.